Arrowverse Crossover: 11 Best Moments From Arrow's 100th Episode 'Invasion!'
7. Spaceflight
The CW gets ambitious here, a small network attempting to put on a spaceship chase.
While it's not breaking any ground, it still manages to do a commendable job, and shows what these series can do on their relatively limited budgets.
It results in a really well done chase sequence, starting with an escape from the alien ship, that goes through to the mothership headed for Earth. After 40-minutes of more grounded action, it's a good way for the crossover to cut loose a little more, and make it feel aligned to the other two shows - which is an excellent way of setting up the concluding part on Legends of Tomorrow.